It's nice, but easy too. Once you decide the last number
you have to move accordingly
I recollect someone suggesting letting bots(AI) play a number of variations of the game first and then use the outcome to ascertain the difficulty - may be an overkill for a fun game like this?
Not so easy anymore
btw: parity. The End! You've successfully completed all of the levels Parity currently has to offer. If you enjoyed the challenge, please make sure to like Parity on Facebook!